bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P17900/1:b..l rcu: (detected by 1, t=10502 jiffies, g=123397, q=1130 ncpus=2) task:syz.6.3433 state:R running task stack:27880 pid:17900 tgid:17892 ppid:11535 task_flags:0x400040 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5357 [inline] __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872 Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 8b 21 03 11 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc90003407458 EFLAGS: 00000206 RAX: cc048a2c957e2d00 RBX: 0000000000000000 RCX: cc048a2c957e2d00 RDX: 0000000000000000 RSI: ffffffff8dba7f2b RDI: ffffffff8be33880 RBP: ffffffff8172c195 R08: 0000000000000000 R09: ffffffff8172c195 R10: ffffc90003407618 R11: ffffffff81ac3ad0 R12: 0000000000000002 R13: ffffffff8e139f20 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 save_stack+0xf5/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:308 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1395 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895 discard_slab mm/slub.c:2753 [inline] __put_partials+0x156/0x1a0 mm/slub.c:3218 put_cpu_partial+0x17c/0x250 mm/slub.c:3293 __slab_free+0x2d5/0x3c0 mm/slub.c:4550 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] __do_kmalloc_node mm/slub.c:4364 [inline] __kmalloc_noprof+0x224/0x4f0 mm/slub.c:4377 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] tomoyo_encode2 security/tomoyo/realpath.c:45 [inline] tomoyo_encode+0x28b/0x550 security/tomoyo/realpath.c:80 tomoyo_realpath_from_path+0x58d/0x5d0 security/tomoyo/realpath.c:283 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x1e8/0x5a0 security/tomoyo/file.c:723 security_file_ioctl+0xcb/0x2d0 security/security.c:2943 __do_sys_ioctl fs/ioctl.c:592 [inline] __se_sys_ioctl+0x47/0x170 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdeabd8e7eb RSP: 002b:00007fdeacbfe050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fdeabfc6218 RCX: 00007fdeabd8e7eb RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000da RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fdeac0efa27 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fdeabfc6218 R14: 00007fdeac0ef940 R15: 00007fdeac0efa28 net_ratelimit: 15339 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) net_ratelimit: 15682 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:da:5d:1c:c7:34:d7, vlan:0)